| #!/bin/sh -eux |
| |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| SSHD_CONFIG="/etc/ssh/sshd_config" |
| |
| # ensure that there is a trailing newline before attempting to concatenate |
| sed -i -e '$a\' "$SSHD_CONFIG" |
| |
| USEDNS="UseDNS no" |
| if grep -q -E "^[[:space:]]*UseDNS" "$SSHD_CONFIG"; then |
| sed -i "s/^\s*UseDNS.*/${USEDNS}/" "$SSHD_CONFIG" |
| else |
| echo "$USEDNS" >>"$SSHD_CONFIG" |
| fi |
| |
| GSSAPI="GSSAPIAuthentication no" |
| if grep -q -E "^[[:space:]]*GSSAPIAuthentication" "$SSHD_CONFIG"; then |
| sed -i "s/^\s*GSSAPIAuthentication.*/${GSSAPI}/" "$SSHD_CONFIG" |
| else |
| echo "$GSSAPI" >>"$SSHD_CONFIG" |
| fi |